Fix session/image UX and align post cost totals

assets/js/block-image-generate.js

@@ -60,16 +60,13 @@
 			};
 			
 			const agentImageId = getAgentImageId();
-			if (!agentImageId) {
-				return wp.element.createElement(BlockEdit, props);
-			}
 
 			const openImageModal = () => {
 				// Dispatch custom event to open image generation modal
 				window.dispatchEvent(
 					new CustomEvent('wpaw:open-image-modal', {
 						detail: {
-							agentImageId: agentImageId,
+							agentImageId: agentImageId || null,
 							blockId: clientId,
 						},
 					})